﻿<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Example08.aspx.cs" Inherits="Chapter29.Example08" %>

<!DOCTYPE html>

<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>代码清单 29-8 以程序方式探索 CSS 属性</title>
    <meta name="author" content="Adam Freeman" />
    <meta name="description" content="A simple example" />
    <link rel="shortcut icon" type="image/x-icon" href="favicon.ico" />
    <style>
        p {
            color: white;
            background-color: gray;
            padding: 5px;
        }

        table {
            border: thin solid black;
            border-collapse: collapse;
            margin: 5px;
            float: left;
        }

        td {
            padding: 2px;
        }
    </style>
</head>
<body>
    <p id="block1">
        There are lots of different kinds of fruit - there are you over 500 varieties 
        of banana alone. By the time we add the countless 
        types of apples, oranges, and other well-known fruit, we are 
        faced with thousands of choices.
    </p>
    <div id="placeholder"></div>
    <script>
        var placeholder = document.getElementById("placeholder");
        displayStyles();

        function displayStyles() {
            var newElem = document.createElement("table");
            newElem.setAttribute("border", "1");

            var style = document.styleSheets[0].cssRules[0].style;

            for (var i = 0; i < style.length; i++) {
                addRow(newElem, style[i], style.getPropertyValue(style[i]));
            }

            placeholder.appendChild(newElem);
        }

        function addRow(elem, header, value) {
            elem.innerHTML += "<tr><td>" + header + ":</td><td>" + value + "</td></tr>";
        }
    </script>
</body>
</html>
